Raymond Tjahyadi

I've built production web applications for BCA and KFC Indonesia's technology partner, supporting banking teams, retail operations, inventory, and HR platforms.

At PT Hipernet Indodata, I built the company's first production Angular v21 standalone-component application: an HR authentication module with JWT login, email/SMS OTP verification, and RBAC session management. I also created a Liquibase and PostgreSQL migration pipeline that became the standard workflow across three products.

I improved ERP report generation by about 25% through query tuning, missing indexes, and redundant-join removal. I maintain REST APIs, test contracts with Postman, and troubleshoot Angular, Spring Boot, Golang, and Oracle SQL issues to keep releases stable.

During my two-year BCA contract, I built an internal application registry adopted by 10+ engineering teams, improved API response times by 30%, and automated eight workflows that recovered roughly 20 staff-hours each week. I pair development with SIT and UAT, and use Claude, Codex, and ChatGPT to accelerate code review, debugging, and delivery.